Hanna Instruments HI 98186 User manual

Dissolved Oxygen

BOD/OUR/SOUR

Meter

HI 98186

Instruction Manual

www.hannainst.com

HI 98186

Dissolved Oxygen Meter

WARRANTYWARRANTY

WARRANTY

Dear Customer,

Thank you for choosing a Hanna Instruments product.

Please read this instruction manual carefully before using the instrument.

This manual will provide you with the necessary information for correct use of

the instrument, as well as a precise idea of its versatility.

If you need additional technical information, do not hesitate to e-mail us at

tech@hannainst.com or turn to the back cover for our worldwide contact list.

These instruments are in compliance with directives.

The HI 98186 instrument is guaranteed for two years against defects in

workmanship and materials when used for its intended purpose and maintained

according to instructions. Electrodes and probes are guaranteed for six months.

This warranty is limited to repair or replacement free of charge.

Damage due to accidents, misuse, tampering or lack of prescribed maintenance

is not covered.

If service is required, contact the dealer from whom you purchased the

instrument. If under warranty, report the model number, date of purchase,

serial number and the nature of the problem. If the repair is not covered by

the warranty, you will be notified of the charges incurred. If the instrument is

to be returned to Hanna Instruments, first obtain a Returned Goods Authori-

zation number from the Technical Service department and then send it with

shipping costs prepaid. When shipping any instrument, make sure it is

properly packed for complete protection.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

WARRANTY ......................................................................................... 2

PRELIMINARY EXAMINATION ................................................................ 4

GENERAL DESCRIPTION ........................................................................ 4

FUNCTIONAL DESCRIPTION .................................................................. 6

SPECIFICATIONS.................................................................................. 8

PROBE FUNCTIONAL DESCRIPTION ....................................................... 9

PROBE CONNECTION AND PREPARATION............................................. 10

OPERATIONAL GUIDE......................................................................... 11

OUR MEASUREMENT ......................................................................... 21

SOUR MEASUREMENT ....................................................................... 24

TEMPERATURE MEASUREMENT ............................................................ 27

DO CALIBRATION PROCEDURE ............................................................ 27

GOOD LABORATORY PRACTICE (GLP) ................................................... 32

SETUP .............................................................................................. 33

LOGGING .......................................................................................... 45

AutoEnd ........................................................................................... 48

PRESSURE CALIBRATION.................................................................... 49

TEMPERATURE CALIBRATION .............................................................. 51

PC INTERFACE ................................................................................... 54

BATTERY RECHARGER/REPLACEMENT .................................................... 62

PROBE MAINTENANCE ....................................................................... 64

TROUBLESHOOTING GUIDE ................................................................ 65

ACCESSORIES .................................................................................... 66

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

The HI 98186 is a state of art, microprocessor based, dissolved oxygen

instrument with many automated and specific application features, designed

to provide laboratory results and accuracy under harsh industrial conditions.

All measurements are automatically compensated for temperature. Salinity

compensation in water allows direct determination of dissolved oxygen in

saline waters. With its internal barometer, the instrument is able to automati-

cally compensate for changes in barometric pressure so there is no need for

charts, altitude information or external barometric pressure information.

The instrument contains built-in application software for the calculation of

Biochemical Oxygen Demand (BOD), Oxygen Uptake Rate (OUR) and Specific

Oxygen Uptake Rate (SOUR).

HI 98186’s calibration has been greatly simplified when compared to other

dissolved oxygen instruments. It is provided with a series of new features which

add entirely new dimensions to the measurement of DO, by allowing the user

to dramatically improve the reliability of the measurement:

• One or two points automatic dissolved oxygen calibration.

• One point manual dissolved oxygen calibration using a value in milligrams

per liter or percent saturation entered by the user.

• One or two points user temperature calibration.

• Messages on the graphic LCD for an easy and accurate calibration.

• User-selectable “calibration time out” to remind when a new calibration is

necessary.

Remove the instrument from the packing material and examine it carefully to

make sure that no damage has occurred during shipping. If there is any

damage, notify your Dealer or the nearest Hanna Customer Service Center.

Each instrument is supplied with:

• HI 76407/4F Polarographic probe with built-in temperature sensors and

4 m (13.4”) cable

• HI 76407A Membrane cap (2 pcs)

• HI 7041S Electrolyte solution (30 mL)

• 4 x 1.2V AA, 1300 mAh Rechargeable Batteries (inside the instrument)

• HI 710042 Inductive Recharger with power adaptor

• Instruction Manual

• Rugged carrying case

Note: Save all packing material until you are sure that the instrument

functions correctly. All defective items must be returned in the original

packing with the supplied accessories.

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

Moreover, the meter offers an extended temperature range from

–20 ºC to 120 ºC (–4 ºF to 248 ºF).

Other features include:

• Log on demand up to 400 samples.

• Auto Hold feature, to freeze first stable reading on the LCD.

• GLP feature, to view last calibration data.

• PC interface.

Hanna Instruments reserves the right to modify the design,

construction and appearance of its products without advance notice.

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

1) Liquid Crystal Display (LCD).

2) F1, F2, F3 functional keys.

3) / keys to manually increase/decrease the parameters or to scroll the pa-

rameter list.

4) ESC key to leave current mode, exit calibration, setup, help, etc.

5) CAL key, to enter/exit calibration mode.

6) RCL key, to enter/exit view logged data mode.

7) SETUP key, to enter/exit SETUP mode.

8) ON/OFF key, to turn the instrument ON and OFF.

9) GLP key, to display Good Laboratory Practice information.

10) LIGHT key, to toggle display backlighting.

11) MODE key to change DO measuring unit when in DO measure screen, or to

toggle between standard and pressure in DO calibration.

12) RANGE key, to switch between DO, BOD, OUR AND SOUR.

13) Help key to enter/exit contextual help.

Front viewFront view

Front view

Top viewTop view

Top view

DOUSB

14) Electrode DIN connector.

15) USB connector.

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SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

PROBE FUNCTIONAL DESCRIPTIONPROBE FUNCTIONAL DESCRIPTION

PROBE FUNCTIONAL DESCRIPTION

PROBE FUNCTIONAL DESCRIPTIONPROBE FUNCTIONAL DESCRIPTION

PROBE FUNCTIONAL DESCRIPTION

1. D.O. Probe

2. Protective Cap

3. Watertight Shielded Cable

4. Polypropylene Probe Body

5. Temperature Sensor

6. O-Ring Seal

7. Silver Chloride Anode

8. Platinum Cathode (sensor)

9. Oxygen Permeable Teflon®Membrane

10. Membrane Cap

To take measurements, connect the D.O. probe to the meter securely by

aligning the pins with the socket located on the top of the meter, pushing the

plug in and tightening the threaded ring.

Probes shipped from Hanna Instruments

are dry. To hydrate the probe and prepare

it for use, connect it to the meter and

proceed as follows:

1. Remove the red and black plastic cap.

This cap is for shipping purposes and can

be thrown away.

2. Wet the sensor by soaking the bottom

2½ cm (1") of the probe in electrolyte

(HI 7041S) for 5 minutes.

3. Rinse the membrane cap (HI 76407A)

supplied in the kit with the meter) with

electrolyte solution while shaking it gently.

Refill with clean electrolyte solution.

4. Tap gently the sides of the membrane

cap with your finger tip to ensure that no

air bubbles are trapped. To avoid damag-

ing the membrane, do not tap it directly

on the bottom.

5. Make sure that the rubber O-ring sits

properly inside the membrane cap.

6. With the sensor facing down, slowly

screw the cap clockwise. Some electrolyte

will overflow.

When not in use and during polarization

(see PROBE CONDITIONING page 11), use the protective transparent cap

supplied in the kit with the meter.

PROBE CONNECTION AND PREPARATIONPROBE CONNECTION AND PREPARATION

PROBE CONNECTION AND PREPARATION

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